Hold a piece of plywood against the wallboard at each stud and press the crowbar against it to pry the molding off. If you have two-piece baseboards, remove one piece at a time starting with the base cap and then remove the wider parts.
Anything that resists electrical flow is an insulator. Insulators are needed in electrical circuits to contain the current flow and prevent shorts or electrocution. Vinyl plastic is used as an insulator for household electrical wires.
The second most common type of switch found in residential buildings is a 3-way switch. These can be identified by three terminal screws and a forth, green screw for connecting a ground wire. A 3-way switch is used to control lights from two locations like at the top and bottom of a flight of stairs.
A wall outlet box that houses two devices side by side as with two wall switches at a door. Triple-gang boxes are also commonly available to hold three devices in one place.